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DNA‐Hybrid‐Gated Multifunctional Mesoporous Silica Nanocarriers for Dual‐Targeted and MicroRNA‐Responsive Controlled Drug Delivery
Author(s) -
Zhang Penghui,
Cheng Fangfang,
Zhou Ri,
Cao Juntao,
Li Jingjing,
Burda Clemens,
Min Qianhao,
Zhu JunJie
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201308920
Subject(s) - nanocarriers , mesoporous silica , aptamer , hela , drug delivery , targeted drug delivery , microrna , endocytosis , chemistry , nanotechnology , controlled release , targeted therapy , cancer research , microbiology and biotechnology , materials science , biology , cancer , cell , mesoporous material , gene , biochemistry , genetics , catalysis
The design of an ideal drug delivery system with targeted recognition and zero premature release, especially controlled and specific release that is triggered by an exclusive endogenous stimulus, is a great challenge. A traceable and aptamer‐targeted drug nanocarrier has now been developed; the nanocarrier was obtained by capping mesoporous silica‐coated quantum dots with a programmable DNA hybrid, and the drug release was controlled by microRNA. Once the nanocarriers had been delivered into HeLa cells by aptamer‐mediated recognition and endocytosis, the overexpressed endogenous miR‐21 served as an exclusive key to unlock the nanocarriers by competitive hybridization with the DNA hybrid, which led to a sustained lethality of the HeLa cells. If microRNA that is exclusively expressed in specific pathological cell was screened, a combination of chemotherapy and gene therapy should pave the way for a targeted and personalized treatment of human diseases.